Improvement in machines for cutting barrel-heads



2 Sheets -Sheet 1. JOHN B. STAN'HOPE.

Improvement in Machines fqr Cutting B'arrel Heads.

No. 124,917; Pai'en'te dMa ch26,I872.

Whissses.

/ Q l Invent LIT 0 2 heets Sh eerz. JOHN B. STANHOPE.

Improvement in Machines for Cutting Barrel Heads.

NO'. 124,917. Patented March 26,1872.

PATENT OFFIcE.

JOHN B. STANHOPE, OF PHILADELPHIA, PENNSYLVANIA.

' IMPRO IIEMENT IN MACHINES FOR CUTTING BARREL-HEADS;

Specification forming part of Letters Patent No. 124,917, dated March 26, 1872.

Srnorrroarron. To whom it may concern:

Be it known that I, J. B. SrANHoPE, of Philadelphia, in the county of Philadelphia,

I, in the State of Pennsylvania, have invented Description of the Drawing.

Figure 1 is a plan of the machine.

a perspective view.

Description of the Nature and Object of the Irioentioh.

Fig. 2 is My invention has for its object soto con-,

struct the machine as to be capable of sawing out any shape of head that may be desired. For this purpose I lengthen the spindle in i the flange A, which holds the barrel-head, and fasten upon it a pattern, B, the shape of whose periphery corresponds to that which the barrel-head is to assume. If, for example, Iwish to saw out a barrel-head which shall be an ellipse, one of whose diameters shall be onehalf Q) inch greater than the other, the templet or pattern will necessarily be elliptical, with the two diameters varying one-half inch; In order to cause the pattern to have the desired efl'ect upon the barrel-head it is necessary that the saw should move away from and toward the centerof the spindle (J, and be governed in this movement by the pattern, for which purpose the frame D, in which the saw-mandrel runs, is fastened to the plate E. To this bed is secured the adjustable steel toe F, which is kept constantly against the pattern by the weight G, which is attached to the plate by'means of the chain running over the pulley H in Fig. 1.

In sawing out barrel-heads it is desirable to make them broader across than they are in the direction of the grain, so that the barrel-head, when fully shrunk, will be nearer to a perfect circle than would otherwise be the case; hence, it is obvious that, as the head shrinks, the tighter all the seams become, thus rendering the barrel less liable to leak.

The head to be sawed is introduced into the space between the flanges A and I, and is held firmly between them by means of the lever J, Fig. 1. The frame K, Fig. 1, is then moved forward by means of the lever L, Fig. 1,which throws the spindle of the fl. nge I into gear, causing the head to turn toward the rapidlyrevolving saw at the same time the steel toe F comes in contact with the pattern B, which regulates the shape of the head. 'M is a stop pin g-screw, which regulates the point to which the sliding plate E can follow the weight. By

this stoppingscrew the difi'erence between the two diameters of the head may be varied without changing the pattern or. tcmplet; for if the sliding plate touches the stopping-screw before the toe F arrives at the lowest part on the periphery of the pattern-wheelB, it is evident the saw will not move so far away from and toward the center of the pattern as would otherwise be the case.

The-principle of turning irregular forms by means of a teinplet or pattern I do not claim; but

What I claim is- The frame K, levers L and J, flanges I and A, pattern B, pattern-toe F, sliding plate E, bearings D, saw N, stopping-screw M, frame 0, weight G, and pulley H, all arranged and operating together as and for the purposes de* scribed.

' JOHN B. STANHOPE. Witnesses:

JOHN PHILLIPS,

WILLIAM H. OARMAN. 

